FFF, you may wish to consider a few technicalities, before `forgetting` the throttle.......otherwise.`a fool and his engine/prop may soon be parted`.....
My recollection is that the design standard for this type required consideration of all aerobatics except those specifically prohibited in the AFM. i.e. the manual would describe recommended procedures and list recommended entry speed for maneuvers - it does not have a list of approved maneuvers - the absence of a maneuver from that list does not imply that the maneuver is not permitted. (For the sake of this discussion can we ignore the situation of new maneuvers being invented, given a name and then claim that they are not prohibited by the AFM). e.g. stall turns (or hammerheads) are not listed in the AFM - from a separate discussion elsewhere a few years back - this interpretation was confirmed with the FAA - stall turns are permitted.
Flick rolls are permitted, easily leads to a spin with full power. When I teach spinning to budding young instructor students, one exercise is recovery from unintentional spins which puts them in a spin with full power.
For more reading on the subject of effect of power and aileron on Cessna spin characteristics see Gene Beggs' article in October 1985 edition of Sport Aerobatics magazine - I haven't seen his book, similar info may also be there. Gene refers to some verbal info from Bill Kershner about power-on spins in the Cessna:
"... after completing two or more revolutions with the power left on, then cutting the power, releasing the yoke, and applying full opposite rudder, the aircraft would show no signs of recovery even after six additional turns with the right rudder held full in." A brisk push on the yoke was needed.
Power and inspin aileron certainly flattens the spin - let's say moderately flat per the NASA classification, closer to 45 deg than 65 deg.